Fisher "F" Series Forum

Anybody using the THunder on the F75. I have it for my E-trac and love it. Own the BIg, thunder, sharpshooter for the F75 but would like to have the thunder if it is worth it for the F75. I know it is lighter than any other coil of that size.

Here's my original post from Dec. 10th of last year:
(Yes, that's me. I used the thunder today and found a quarter at around 7"...the deepest quarter I've found so far. I like it for big soccer fields and such. I also have the NEL hunter and the separation between it and the thunder seems about the same to me. They both separate really well. I'm a newbie so take my observations with a grain of salt I have a little test garden in the backyard with all clad: a quarter at exactly 8", dime at 7", copper penny at 6". The soil in my yard ground balances at 88 and is red clay full of mica. The thunder will easily pick up the penny and dime with a totally strong signal from any angle with sense at 50 and thres at +3, disc at 1. The hunter coil will easily pick up the penny, but doesn't have a strong signal on the dime. The stock 10" concentric barely picks up the penny. That 8" quarter is really hard and can only be picked up reliably with the thunder coil in all metal mode. Just for reference, the only other detectors I've tried on these coins is my two compadres; one that I bought for my daughter with the 5.75" coil and my newest one I bought for me with the 8" coil. Neither one will make any sound at all even on the penny. I tried my compadre the other day at a local park with different soil and got a penny at 5-6 inches no problem. So that patch of red clay in my back yard is some nasty soil.)

Since then I recently tried the thunder coil and it will pick up the quarter in disc mode and in SL (or boost). It will pick up the quarter reliably in some, but not all directions on both swings.I have also tried my compadre recently and it will now hit the 6" penny fairly reliably, but not from all directions as I walk in a circle around the coin. The soil was drier back in Dec. and the coins have now been buried close to 6 months now so that may make a difference also. BTW, I just got a 5" fisher dd coil and it will reliably hit the penny in all directions and will also hit the dime in some directions, but not all.